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Tulln Benchmark


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#1 mcmirande

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Posted Mar 20 2012 - 03:56 PM

At first. THANKS FOR THE F2 RANK  :clap2: :clap2:  

However, I'm reading my rank and discovered that I'm in red at Tulln... and comparing times I found out that there's no negatives in Tulln.

I raced there online in our league (Mybroga) which is a very fast one, with several guys in -50 or -60 in the GPLrank, and the best time at practice was by Nilo Petricca, who did 1m04.989. Indeed, until I know this is the absolute record in this track, but it's still in positive.

I know that benchmark is just a reference time and that eventually someone (maybe Woodward, if he return racing) will break it, but... don't you think it's too low?

Cheers, Marcos.

#2 ginetto

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Posted Mar 21 2012 - 05:11 AM

The benchmark times are the poles of the real races in 67. In this case, the difference between real and GPL track is probably too much :)

#3 Sash2006

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Posted Mar 21 2012 - 07:34 AM

No-no-no, 1:04.24 is not pole in Tulln 1967 F2, it is fastlap! Pole is 1:05.3! Analogic situation in Snetterton, where pole was 1:28.8 and fastlap was 1:28.2.

Proof:

Tulln: http://www.formula2.net/F267No20.htm

Snetterton: http://www.formula2.net/F267No5.htm


Edited by Sash2006, Mar 21 2012 - 07:40 AM.


#4 ginetto

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Posted Mar 21 2012 - 07:39 AM

OK fastlap, not poles ;)
What I meant is that the benchmark times aren't related to the GPL tracks at all, so it can happen that they differ. It all depends on how accurate is GPL track not just in layout but also in elevation changes, camber of turns and bumpiness of the surface. Not an easy task if you're working on 50 year old circuits :wave:

I would also consider that the real fast lap was obtained by the faster real driver in the world and I will be fine if I never will reach that goal, otherwise I could go and race Schumacher :P
Using this method, is the same concept that assigning GPL benchmark using all the world records for every track; it will be just 1 person who can do that, all the rest will be red.

Edited by Ginetto, Mar 21 2012 - 07:45 AM.


#5 mcmirande

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Posted Mar 21 2012 - 07:45 AM

OK. After writing I was thinking exactly the same, that benchmarks were probably based on real times.
So, I'll not be in green in all tracks :)

Thanks, Marcos.

#6 Sash2006

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Posted Mar 21 2012 - 08:02 AM

Fortunately or unfortunately, this time of FL is not real on GPL track Tulln. It time would not green for 1 person, only for 0. Pole could be more real for really fast racers :)

#7 Lyddell

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Posted Apr 04 2012 - 02:14 PM

The 2,860m circuit in GPL is the layout as used in F2 in 1971 only.

The F2 races of 1967-70 had a lap of 2,700m.
I presume this means that they did not have the slow chicane (turns 6 & 7) but simply followed the taxiing road turning right onto the runway (start/finish straight) and entering this straight with a faster speed.
So a shorter lap & with a higher average speed.

'67 'www.formula2.net/F267No20.htm
'71 'www.formula2.net/F271_21.htm (held in heavy rain)

Circuit & Aerial photo www.gdecarli.it/php/circuit.php?var1=98&var2=2
(drag the photo down a little & note that the track diagram is upside down)

#8 Border Reiver - guest

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Posted Apr 05 2012 - 04:45 AM

Good spot. I had similar issues with Wigram, where over the years they laid out the track in slightly different configurations for the various hairpins made at the intersections of runways and taxiways. Probably every year the track would have been subtly different, (even if the shape and layout were intended to be the same) as it was being created for only one weekend a year, and for the other 51 weeks the normal business of the airfield had to go on.

Maybe if Sergio has all the files he might be willing to make an alternative version with the altered final turn section?

Rob

#9 ginetto

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Posted Apr 05 2012 - 06:37 AM

Getting rid of the last hairpin it will reduce the lenght by 60-70 meters(see pics attached GPL-...); there is still 100 meters to get rid of.
Now, "where to get 100m." is the question :think:

Or there is an error in the F2 site ?

I just created new layout using a proportioned Google Earth picture (the ruler says that the yellow line is 1091 meters) and the result in length you can see on the NewLAYx attached pictures.
From these looks like 2860 meters is the length without any hairpin...  :unsure:
Please do your own tries :wave:

Attached Files


Edited by Ginetto, Apr 05 2012 - 08:14 AM.


#10 tooncheesef1

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Posted Apr 05 2012 - 07:38 AM

I don't think that the final section is the issue, I scaled the two maps (GPLRA and Earth) and put them on top of each other to get this.

Attached File  tulln.png   357.38K   41 downloads Attached File  tulln.png   360.62K   42 downloads

It looks like the straight between T2 and T3 is too long, and T5 is too tight. I will also have a look with GTK maker is a moment.

#11 tooncheesef1

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Posted Apr 05 2012 - 08:19 AM

I was comparing tulln maps, and it appears that this is the one that the gpl track was based on.

http://www.formula2.net/Tulln.jpg

#12 ginetto

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Posted Apr 05 2012 - 01:50 PM

Interesting site with map
http://www.motorspor...angenlebarn.htm

another one about '71 race (says length was 2.768m.)
http://www.ronniepet...nlebarn_71.html

Edited by Ginetto, Apr 05 2012 - 02:21 PM.


#13 Sid

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Posted Apr 10 2012 - 12:00 PM

If the benchmark time was taken from the F2 Register http://www.formula2.net/F267No20.htm then it's based on the fastest lap over 2700 meters.
The track in GPL is 2864 meters long or 6% longer. So why not just make the benchmark 6% longer, which would be 1.08.09?

Just to throw in another slight problem, the benchmarks themselves aren't consistent.
At Snetterton and Tulln Langenlebarn it's the FL, which was faster than the Pole.
At Jarama, Zandvoort, Brands Hatch and Vallelunga it's Pole, which was faster than the FL.
At Hockenheim and Enna Pergusa it's Pole, which was slower than the FL.
At Silverstone both Pole and FL were the same.

I think the whole thing needs looking into further. Opinions?
:2c:

#14 Dr Tooth

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Posted Apr 11 2012 - 11:19 AM

View PostSid, on Apr 10 2012 - 12:00 PM, said:

If the benchmark time was taken from the F2 Register http://www.formula2.net/F267No20.htm then it's based on the fastest lap over 2700 meters.
The track in GPL is 2864 meters long or 6% longer. So why not just make the benchmark 6% longer, which would be 1.08.09?

Just to throw in another slight problem, the benchmarks themselves aren't consistent.
At Snetterton and Tulln Langenlebarn it's the FL, which was faster than the Pole.
At Jarama, Zandvoort, Brands Hatch and Vallelunga it's Pole, which was faster than the FL.
At Hockenheim and Enna Pergusa it's Pole, which was slower than the FL.
At Silverstone both Pole and FL were the same.

I think the whole thing needs looking into further. Opinions?
:2c:

We set up the fastest times at each track pole or fl to become Rank, exept for tracks with great draft like Hockenheim and Enna Pergusa, where pole was taken.

Isnt it great that we have a Rank now  :clap2:  :lol:

Enjoy!

Dr Tooth  :wave:

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#15 Sid

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Posted Apr 11 2012 - 02:36 PM

View PostDr Tooth, on Apr 11 2012 - 11:19 AM, said:


Isnt it great that we have a Rank now  :clap2:  :lol:

Enjoy!

Dr Tooth  :wave:

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Yes it is, and please don't think I was criticising in any way.
However, as a bit of constructive criticism, a BM based on a track 2700 metres long IRL, can't be right for the GPL version at 164 meters longer, that's all I'm saying.
Thanks for making it clear how you came by the benchmark times, and a great many thanks for GPLRank
Regards
Sid




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